what milligram is in a b12 injection Methylcobalamin (Vitamin B12) Oral B12 vs. B12 Injections:
Description
The HCPCS drug code (J3490) and CPT administration code (96372) are the same for both

Levels of methylmalonic acid (MMA) and homocysteine rise, because the body needs B12 to convert them into other compounds

Pouliot MC, Desprs JP, Nadeau A, Moorjani S, PrudHomme D, Lupien PJ, Tremblay A, Bouchard C
In healthy animals: half the dose

Indeed, fatigue is one of the first signs of vitamin B12 deficiency
